Volunteers from Hewlett-Packard joined EARTH professors and students to plant over 3,000 trees on Saturday.

The event signified their commitment to carbon neutrality, an extension to a project began in 2008, where EARTH and HP committed themselves to a three-year reforestation project in Costa Rica.

Learn more about the project in HP’s brief Global Citizenship Report: http://www.hp.com/hpinfo/globalcitizenship/08gcreport/employees/volunteerism.html